Javier Milei, the incumbent president from La Libertad Avanza, leads trader consensus at 52% as the frontrunner for the 2027 election due to his party's stronger national polling floor and consolidation of center-right support ahead of a likely first-round contest. Recent surveys through August and early September 2026 show him ahead of Buenos Aires Governor Axel Kicillof in first-round vote intention, though runoff matchups remain tight within margins of error amid persistent economic headwinds and approval ratings near 38%. Kicillof's 34.5% reflects his positioning as the primary Peronist challenger, bolstered by internal party dynamics that limit unified opposition alternatives like Sergio Massa. Lower probabilities for figures such as Myriam Bregman and others stem from fragmented smaller-party support and limited national traction in current polling. Economic performance and opposition cohesion over the coming months remain the main variables that could shift these implied probabilities.